Hi hun.
I tried agnus after being off depo for a few months. I don't know if it was that, but after taking it from cd1 to ov, i did actually have an AF.
I had nothing at all for 5 months, then i bled for 18 days, stopped for 5 and got a real AF. Bang on time a month later i bled again, for 23 days
then went onto conceive. That ended in early mc, but hey ho.
Maybe agnus was a help there???
My only advice to you is that depo does screw you up. Everybody's cycles return to normal at different rates.
After coming off it, i had no prob with ov as i also got caught 2 weeks after coming off it! however, it messed up the thickness of my uterine lining, hence the very sparse bleeding (which was very light) and the inability to carry a pregnancy.
From what i have read/heard, taking it takes a couple of month to work, so it isn't a quick fix.
Best of luck hun, i'm sure it won't do any harm to give it a go
xxx